Grease-cup.



PATENTED JUNE 4,,190'7. F. G. HUNTER.

GREASE 0UP.

APPLIOATION FILED JAN. 14. 1907.

' s SHEETS-SHEET 1.

INVENTOR ATTORN No. 855,889. PATENTED JUNE 4, 1907.

. F. G. HUNTER.

GREASE CUP.

APPLICATION FILED JAN.14, 1901.

s SHEETSSHEIET 2,

No. 855,889. v PATENTED JUNE 4, 1907.

' E. G. HUNTER.

GREASE 0UP.

APPLICATION FILED JAN. 14. 1907.

s SHEETS-SHEET a.

I I I 77!. 52 3: 17 W ATTORN'EY 'be applied.

unirn STATES r err-ion.

GREASE-CUP.

fipecification of Letters Patent.

Appl ntion filed January 14,1907. Serial No- 352,138-

Patented June 4, 1907.

To all whom (it Dbltf/ concern:

Be it known that l, FREDERICK GEoimE HUNTER, a citizen of the Dominion 01 Canada, residing at the city of Moncton, in the.

county of l'Vestinorelaiul and Province of New Brunswick, Canada, have invented certain new and useful I In rovenients in Grease- Cups, of which the following isa specification.

The invention relates to improvements in grease-cups for use on locomotives, stationary engines and other machinery, and it consists in the novel features hereinafter described and claims.

The purpose of the grease-cup is to afford convenient means for lubricating a. bearing or the meeting surfaces of two parts which in use move against each otheror have one surface moving against the other. A greasecup is cylindrical in outline and at its lower end is in communic ition with a conduit or assage leading to tie bearing or part to be ubricated and throdgh which the grease is forced by pressure applied upon the top of the body of grease within the cup.

The grease-cup of my invention comprises a cylindrical casing having a female screw thread in its inner wall, a plug 'havinga male thread on its sides adapted to engage said particularly pointedout in the female thread, said plug being adapted to be screwed down upon the bod of grease in the cup, and means, substantia ly as hereinafter described, for preventing said plug from working upwardly from the body'ol' grease or from the cup due to the jarring oi the same by the movement of the parts of the locomotive or other machinery to which the cup may My invention relates more particularly to the plug which enters the cup and engages the top of the body of grease therein, and its object is to provide a plug having means for automatically preventing the outward movementof the same except when by the application of the proper key or tool said means are -moved to an inoperative position preparatory to the removal of the p ug.

The invention will be fully understood from the detailed description hereinafter pre sented, reference being had. to the accompanyirig drawings, in which:

Figure l is a side elevation, partly broken away, of one of the side rods of a'locoinotive engine equipped with a grease-cup embodying my invention, the cup and its plug being shown in central vei'ticalscctiouz Fig. 2 is a detached top view of the cup with the plug locked therein by means embracing my in- -vention; Fig. 3 is a like view of same, with the plug locking means shown as held in an inoperative posiiioirby the key or tool used for unscrewing or rmuoving the plug, said key being shown in transverse section; Fig.

4 is a detached top view of the locking-plate removed from the top of the plug; Fig. :3 is an edge view of same: Fig. 6 is a detached side View of the pin for pivotally securing the locking-plate upon the plug; Fig. 7 is a side elevation of the key or tool for screwing the plug into and removing itirom the cup, the engaging end oisaid tool being also adapted when applied to the plug to move the locking plate imo und hold it at its inoperative position; Fig. 5 is an elevation of same, taken from the top ol Fig. 7; Fig. 9 is a side elevation ol :1 modilicd lorm of plug embodying my invention, the iiiodiiication residing mainly in providing the plug with a vertical polygonal stem in lieu of a socket to receive an applying and removing key or tool, and equipping the locking-plate. with an upwardlyextending lip to beeiigaged by the side of said key or tool when the latter is applied to said stem, for moving the said plate into its inoperative position; Fig. 10 is a top view of the plug shown'in Fig. 9; Fig. 11 is a like view o1 same, with the locking-plate shown held in its inoperative position by the key applied to the polygonal stem of the plug, said key being shown in transverse section; Fig. 12 isa detached top view of the lockingplate ol" the plug shown in Figs. 9, 10 and '11 'Fig. 13 is a side view of same; Fig. 14 is a side elevation of a key or tool adapted for applying and removing the plug shown in Figs. i), 11) and 11, this key having a socket in' its lower cud to fit over the polygonal stem of the plug; Fig. 15 is aview ol the lower end of same; Fig. 16 13 an edge view of a modified form of the locking-plate shown in Figs. 1 to 5 inclusive, the modification residing in providing the engaging end or point of the plate with several teeth instead of only one tooth to lock against the inn r threaded wall oi the greasecup, and Fig. '17 is a view of a like modification ofthe locking plate presented in. Figs. 9 to 13 inclusive.

.[n the drawings, 20 designates a portion of one of the usual side rods of .a locomotive engine, 21 an external grease-cup or shell formed on the end thereof, 22 an inner grwisowup sot'urod within said o\tornal (:up or sholl, 25- a plug or plungor \iithin tho uppor portion ol said inuor groaso-onp. J-l tho lot'lting-plato pivototi thoroon. and J5 tho oontluit or passago loading lroln tho groasooup to tho parts to ho luln'ioatod.

.\i llH'tHllUH rosidos in an intornall throadod oup, plug 23; and looking plato 3-1, and not -in an spot-ial oxtornal t-onstruotion of or lnoans l'or soouring tho said ouppho moans shown for this purposo proson iug only ono ol' sovotal woll known and t-otn inonl usod niothods l'or sot'uring groaso oups, ono nthor tnothod hoing to lortn tho o.\'toi't|al oup 2| as a sopalato piooo andholt it to tho rod it). in whioh ltlSltNlt't tho innor sido walls of tho onp aro throadod from tho top to noarly tho hottotn of t ho sanio and tho throatlod plug 21-! is appliod dirot'tl) to said walls in liou ol' to tho walls of an innot' t-up whioh in sut-liinstalioo is not usod at all.

For tho purposos ol' tho prosont invontion -tho innor oup 32 may ho oonsitlol'otl as simply l'orniiug tho innor walls of tho outor oup 21 but for oonvoniont'o in dost-tilting tho strut-- ttuo shown tho said parts aio rol'orrod to as innor and outor oups. 'lho outor rup .2! in tlut adod at its uppor innor portion to ttt'titt tho otxtorior tlu'ond on tho innor oup 22, as usual, and tho innor oup 22 is l'ormotl on its .innor walls with a tomato tln'oad oxtonding from tho top to tho ltottoni of tho sumo. as shown in Fig. ti

'lho plug or plnngor has an oxtorior llnoad adaptod to tho l'otnalo-throad on tho.

form of a ilat frame having an oponing 29 and o toothed projootion 30, said oponing 29 substantially (:orrosponding with tho outlino of tho rocoss 2F, as donotoil in Fig. 3, and said projection 3t} hoing adaptod whon said opon ing 29 is not in line with said roooss. or in tho position shown in Fig. 2, to ongago tho innor wall of the on 22 and took tho plug 2.; within said cup. hon tho plat/o 24 is in the position shown in Fig. 3 with its oponing 29 matching the rocoss .25, the pt'ojootion 30 is free of the wall ot'fitho cup 22 and idle. 'lho pinto 24- is normally j 'ioltlingly hold in tho position shown in Fig. 2 with its oponing not; matohinghut on tho contrary ovor apping tho roooss 25, by moans of a ooilod spring 3t housod honoath a lip 32 and rossing againstono odgo, of said plato. 'lho ip 32 is intogral with tho plug 23 and is 01 suilioiont longt h to oxtond ovora part of tlio plato 2i and thort h sorvtto guido tho plato and ro'sist nn strain tonding to I'ort-o tho plato up\\'ardl l'roin tho plug. .\1 tho odgo ol' tho oponiug "ti noarost tho projootion Sttl. tho plato 34 is l'orinod with an aro-lil o roooss .tli whit-l1 oxtouds upon tho law of tho plu and within tlto otltlino ol said rot'oss Iii; a pin It-l is l nstonod to tho plug with its hoad lapping upon tho adjaoont odgo ol'tho plato .2 t. as shown in Figs. 2 and It. said lioatl also sorvingto rosist any strain tonding to tort-o tho plato up \\':Hlll l'roni tho plug.

'lho projootion 31) is pointod at its ond and this pointod ond projoots toward tho lott. or in a position to normally rosist tho unsorowing ol tho plug 'lho pointod ond of tho projot'tion lit! ontors in hot'woon tho lhroads on tho oup. and whon tho plato 21 is pt'ossod latorall h tho spring 2%] (Fig. 2). said ontl is hold oroontrioall}- to tho plug, thorohy onahling tho plalo to ahsolutoly provont any at'oidontal unsorowing ol tho plug. 'lho plato 2! is hingod or ])l\t)ittll soourod at ono -o rnor. this hoing tho lowor right hand oornor. looking at l igs. 2 and 3;. and tho projoctiou Itti is looatod soniowhat to tho right of tho diagonallv o iosito oornor ol' tho tltllt thorohy assuring Ior said projootion a thorouglil ollootivo ot' ontrio position to rosist, whou in opot'ation. tho tuna-rowing ol tho plug.

Whon it is dosirod to apply tho plug 23 to tho oup trol'orring to l igs. l. 2' and I3), tho ontl 26 of tho tool 27 is 'prossod through tho oponing it? in tho plato 2t and into tho rot-ossor sot-hot '35 in tho plug .23. tho taporo'd odgo 2%.] of said tool lirst ougaging that portion (tho lol't hand portion, looking at Fig. it of said plato ovorlapping said roooss and moving said phtto to tho loft until the opening 3h t horoin rogistors wit it sttid roross, whereupon tho ontl of tho tool nuiy fully ontor said rot'oss. as shown in Fig. 3. 'lho end of tho tool I whoa in tho. rot-oss of the phtg holds llto phi-to or loolt 24 in its inoporativo position (Fig. 2-5), and tho pressure of said plato against tho sido of tho ond of the tool hinds said plug to tho too], so that the hi may ho t'ari'iod on tho ond of the tool, wliicl is an important consideration especially \i'hon tho plug is hot; or oo'voretl with grease, whioh is ofton thooaso. Upon the insertion of tho ond of tho tool 27 in tho rocoss ofthe plug. tho la-ttor may horoadily screwed into, tho cup and down upon tho hotly of'grea-se, and from time to time if necessary the tool may ho utilized for n'ioving the. plug farther down in the oup as tho grouse becomes constunt d.- After tho plug has been introduced int/o tho oup. tho tool will be withdrawn. thorolrom, and tltoroupon the spring 31 will inunoditttoly nuwo tho plate 24 to its Opera tivo posltion, shown in Fig. 2, oauslng the projootion It!) to ongago tho Wall of the cup,

. l/Vhen it is desired to remove the )lu 23 in which position said plate will lock the plug against any action tending to cause it towork upwardly within or from the cup.

from the cup the tool 27 will be applied to the tsame as before and usedto unscrew the plug, the plate 24 then being held by the tool in its inoperative position shown in. Fig. 3

In Figs. 9 to 13 inclusive I illustrate the plug 23 as having a central vertical polygonal stem 36 in lieu of a recess or cavity 25 to receive the applying and removing tool, which in view of the use of the stem should be of the construction shownin Figs. '14 and 15, wherein it will be seen that the end 37 of the tool is formed with a tapered edge 38 (corresponding with the tapered. edge of the tool 27) and a socket 39 to pass upon the stem 36. The plate 240 for the plug shown in Figs; 9 to 13 inclusive is provided at one side with an upwardly and inwardly and then outwardly extending lip (Fig.0) to be engaged by the side of the end 37 of the tool when the latter is applied to the stem 36, so that thereby said plate may be moved to its'inoperative position, shown in Fig. 11. Upon the removal, of the tool from the stem 36 the spring 31 will restore the plate 240 to its operative position. The spring 31 in the construction shown in Figs. 9, 10 and 11 is set into a recess formed in the side of the stem 36 and presses against the inner edge of one'side of the plate 240 instead of against the outer edge of the other side thereof, as in the construction shown in Figs. 2 and 3. In the construction shown in Figs. 9, 10 and H, the integral lip 32 of Figs. 2 and 3 is omitted and the arc-like recess 33 and pin 34 are employed. r

I present Figs.'9-, l0 and 11 to indicate that the invention is not limited to all the details shown in Figs. 1, 2 and 3, and that the details of construction may be readily modified within the spirit of my invention and without departing from the scope thereof.

In Fig. 16 I present the locking-plate of Figs.-1, 2 and 3 as being somewhat. thickcncd and providedwith several teeth to engage the inner wall of the cup, this modified form of locking-plate numbered 241 and in Fig. 17 I show the locking-plate of Figs. 9, 10 and 11 as being thickened and provided with severalengaging-teeth this modified form of locking plate being numbered 242.

I have hcrcinbef ore described the pr'c l'crred embodimcnts of my in'vention and l am aware of further modifications which do not require s 'mcific mention.

Without therefore limiting my invention to details of form or construction further than the same "may be indicated in the claims, what 1. claim as new and desire tosecure by lletters-Patent, is: l. A grease-cup having a female thread on its inner cylindrical wall, a screw plug to enter the cup and engage said thread and provided with means for receiving a tool to opcrate it, and aspring-presscd locking piece carried by the plug and having a projecting poriion normally engaging the wall of the cup for locking said plug against movement therefrom, said locking piece having a part to be engaged by said tool for moving said piece to its inoperative position: substantially as set forth.

2. A grease-cup having a female thread on its inner cylindrical wall, a screw plug to enter the cup and engage said thread and provided with means for receiving a tool to operate it, and a spring-pressed locking piece carried by the plug and having an eccentrically disposed projecting portion normally engaging the wall of the cup for locl ing said plug against movement therefrom, saidlocking piece having a part to be engaged by said tool for moving said piece to .its inoperative position; substantially as set forth.

3. A grease-cup haviiig a female thread on its inner cylindrical wall, a screw plug to enter the cup and engage said thread and provided with means for receiving a tool to opcrate it, and a spring-pressed locking piece pivotally secured to said plug and having an eccentrically disposed projecting portion normally engaging the wall of the cup for locking said plug against movement therefrom, said locking piece having a part to be engaged by said tool for moving said piece to "its inoperative position; substantially as set forth. i

4. A grease-cup having a female thread on its inner cylindrical wall, a screw-plug to enter the cup and engage said thread and having polygonally shaped means for receiving": tool to operate it, and an cccentrically mounted spring-pressed locking-piece carried by the plug'and having a projecting portion normally ingaging the wall of the cup for locking the plug against movement there from, said locking piecl being in the form of an open frame and normai-lyobstructing the application of the said tool to the plug and being adapted to be moved to its inoperative position by the act of applying the tool to the plug; substantially as set iorth;

5. A grease c t-p having-a female thread on its inner cylindrical wall, a screw-plug to enter the cup and engage said thread and having a socket to receive a tool for operating it, and an eccentric-ally mounted spring-pressed locking-piece carried by the plug and having a projecting portion normallylengaging the waltol' the cup for locking the plug against movement therefrom, said locking-piece being' in the to m of an open frame and normally obstructing the application of the said tool to the plug and being adapted to be i moved to its inoperative position by the act of applying the tool to the plug; snhstnn tinlly as set forth.

(5. A greaee-cup having at female thread on its inner cylindrical Wall, it serew-plug to enter the cup and engage said thread, and it springpressed loeking, piece curried by the plug and having it projeetii'lg portion norinnlly engaging the well of the euplor loekin the plug against movement therefrom; snid locking-piece being on eeeentrie end by reason thereof normally positively prevent; ing any reverse movement of said plug; substiintiitlly as s t forth.

7. A grease-cup having a female thread on its inner evlindrieul wall, it screw-plug to enter theenp and engage said thread, and an eeeentrieelly mounted spring pressed locking piece carried by the plug and having :1 projecting portion normally engaging the well of the cup for looking the plug against H1OVG- ment therefrom, said plug having a lip extending over it part of said locking-piece in.

position to resist upward strains against the same SLllJSlJlllltlilllY its set forth,

8. A grease-cup having it female. thread on its inner cylindrical wall, a screw-plug to en ter the cup and engege said thread, and an eccentrieelly mounted spring-pressed locking piece carried by the plug and having a. projecting portion norn'mlly engaging the wall of the eup for locking the plug against movement therefrom, said loeking-piece lntving portion and said plug having; it pin (34) within the outline of sand recess and whose head extends pin fly over said piece; suhstonti tll as set forth.

'9. A grease-eup having a i'ennile threinl on its inner eyli'udrieatl wall, a screw-plug to on ter the enp and engage said thread, and o spring-pressed looking plate pivot-ally secured at one point to said plug and at .t(lltt,;() nitl point having a tooth to engage the well. of the eup for locking the plug against movement therefrom substitntially r i eat forth.

It). A grease-cup having at Jennile thread on its inner ylindritnl wall, it screw-plug to enter the eup and engage said thread, and 2L spring-pressed locking plate pivotnlly secured at one point to said plug and at it di-- iigonnl point having n tooth to engage the well ol' the eup for locking the plug against nnwement thervironl, sind plop hovlng o sent for an operating tool and swid nhite normil-ll ohsti ueting the itpplhezztion oi the tool to said seat but adopted to yield to the pres-- sure of said tool; suhst antinlly it set forth.

Signed at Moneton, Vv'estmorlend rounty, New Brunswir'k, Cnnudit, this 7th day ol Qhnnnn v I907.

llllillllllltlli (llltllllll lll'N'll lll. \Vitnesses Ansrin A. ALLEN,

lino. HARRY HUNTER. 

